Fuse-box.



PATENTED MAR. 27, 1906.

E. M. HEWLETT.

FUSE BOX.

APPLICATION FILED MAY 14, 1902.

Inventor: E:dwardM.Hew\eCC,

(Ditn eases:

UNITED STATES PATENT OFFICE.

EDWARD M. HEWLETT, OF SOHENEOTADY, NEW YORK, ASSIGNOR TO GENERALELECTRIC COMPANY, A CORPORATION OF NEW YORK.

FUSE-BOX.

Specification of Letters Patent.

Application filed May 14,1902, Serial No. 107,270-

To ah whom, it may concern:

Be it known that I, EDWARD M. HEWLETT, a citizen of the UnitedStates,-residing at Schenectady, in the county of Schenectady, State ofNew York, have invented certain new and useful Improvements in Fuse-Boxes, of which the following is a specification.

In the use of safety cut-outs for electric circuits it is customary toprovide a porcelain orother refractory fuse receptacle or box with amica cover in the main leads to a consumers premises, so that thecondition of the fuse may be ascertained without removing the cover, andthus information easily acquired as to whether or not the fuse hasblown. In order to remove a fuse after it has opened the circuit,however, it is necessary to remove a number of set-screws and a clampin-frame before the mica cover can be detache and a new fuse inserted. Myinvention is designed to render access more easy to the fuse-strip andto cheapen the construction of the receptacle by which it is inclosed,at the same time enhancing its appearance. I proceed by forming thesides and cover of the inclosure of strips of mica and maintaining themin position by means of guide-slots formed in a group of posts arran edaround the fuse-terminals. The side wal s may be completed by slippingthe strips or sheets of mica into vertical slots in the posts, and thecover may be ut in place by slightly buckling the sheet of mica of whichit is constituted and slipping it into horizontal grooves 'or undercutsnear the top of the posts. Thus I provide an organization in i which allparts of the fuse-terminals and the fuse-wire may be seen at a glance,since the entire casing is transparent, and the utmost ease of access ispermitted to the fuse for the purpose of,replacing a spent fuse, and atthe same timeII provide a cheap and withal an elegant construction.

In the accompanying drawings, which illustrate a convenient embodimentof m invention, Figure 1 is a top plan view of a K158- box embodying myimprovements. Fig. 2 is a side elevation showing a fuse-box involving myimprovements mounted on top of the sup orting-board. Fi 3 is a detachedview of t e sheet of mica w 'ch forms the cover,

. and Fig. 4 is an isometric detail showing one of the guide-posts for amica wall.

Referring to the drawings, 1 represents a support upon which thefuse-terminals and the parts of the cover are mounted.

2 2 are the fuse-terminals, and 3 3 3 3 are four posts, each slottedvertically, as indicated, to accommodate and guide the sides of the box,which may be-formed of strips of mica, and provided with an undercut orgroove near the top to permit the insertion of the mica cover. Thedetail of one post is seen in Fig. 4, where 4 4* represent the twovertical slots formed in each post at right angles to each other,-and 5the horizontal groove near the top to form arecess for the edge of themica cover.

6 represents the mica cover, which may have the corners removed, asindicated, so that by inserting the corners of one edge in two of theposts and slightly buckling the strip it may be locked in place in thefour suports. It is not absolutely essential that our supports beemployed, since three or any other suitable number might be made toanswer the purpose. It will be seen that the cover may be easily removedto renew the fuse when necessary by simply buckling the sheet and firstwithdrawing one end. The

sheet being transparent, the condition of the by Letters Patent of theUnited States, is

1. The combination with a fuse, of an inclosure having transparent sidewalls, undercut supports and a resilient transparent cover sprung intothe undercuts in said supports.

2. The combination with a fuse, of an inc'losure having a support,longitudinally and transversely grooved posts extending upward from saidsupport, and sheets of transparent material removably inserted into saidgrooves to form the sides and top of said inclosure.

3.- The combination with a fuse, of an inclosure having a support,longitudinally and transversely grooved posts extending up- Ward fromsaid support, and micasheets re- Walls of said inclosure and a micasheet movably inserted into said groovesto form sprung into thetransverse grooves to form the sides and top of said inclosure. t e topof said inclosure.

4. The combination with a fuse, of an in- In Witness whereof I havehereunto set my 5 closure having a support, posts extending uphand this13th day of May, 1902.

Ward from said support and provided with I EDWARD M. HEWLETT.

longitudinal grooves extending throughout their length and transversegrooves adjacent Witnesses:

4 to their outer ends, mica sheets inserted into BENJAMIN B. HULL,, 10the longitudinal grooves to form the side HELEN ORFORD.

